名词
中文翻译：静脉
同义词：
['veins', 'arteries', 'capillaries']
例句：
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1.The veins in the skin are responsible for carrying blood away from the heart.
皮肤中的静脉负责将血液从心脏输送出去。
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2.Blood vessels are essential for delivering oxygen and nutrients to cells throughout the body.
血管对于向身体各个细胞输送氧气和营养物质至关重要。
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3.The doctor examined her for a swollen vein under her arm.
医生检查了她的手臂下方的一条肿胀的静脉。